Traveling grate



(No Mdel.)

R.J. SHEMAKER.

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UNITED STATES PATENT Ormes.,

ROBERT J. SIIOEMAKER, OF PHILADELPHIA, PENNSYLVANIA.

TRAVELING GRATE.

SPECIFICATION forming` part of Letters Patent No. 465,295, dated December 15, 1891.

Application tiled May 8, 1891. Serial No. 392,057. (No model.)

of the` invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to improvements in traveling grates for stoves, ranges, heaters, steam-boilers, and other furnaces.

The object of the invention is to provide a stove or other grate in which the grate-bars are linked together, forming, as it were, an endless chain, which passes over sprocketwheels journaled in the stove or other furnace, by the rotation of which the barsare caused to travel along simultaneously underneath the fire-pot, whereby the ashes or other solid products of combustion are cleared from the fuel and deposited in the ash-pit.

The invention consists in the novel eonstruction and combination of parts, which will be hereinafter fully described, and detinitely set forth in the claim.

In the accompanying drawings, Figure 1 is a sectional end view of a furnace with my improved grate applied thereto. Fig. 2 is a sectional side view of the same. Fig. 3 isa side elevation, on an enlarged scale, of one of the sprocket-wheels and a portion of the grate. Fig. 4 is a perspective view of one of the grate-bars detached.

In the present instance I have shown the invention as applied to a heater, although it is obviousl that it can be employed in connection with an ordinary stove, a range, or other similar article, as well as steam-boiler and other furnaces. e

In the said drawings, the reference-numeral 1 designates the casing of a furnace, 2 the fire-pot, and 3 the ash-pit having door 4. These may be of any ordinary or suitable construction. The sides of the casing below the tire-pot are provided with horizontal ledges 5 5, upon which the ends of the giiate-bars rest and slide, as will hereinafter appear.

At each end of the furnace and journaled in the casing are transverse shafts 6 6, upon which are mounted, near each end, sprocket or cog wheels 7. One or both ot' these shafts may be provided with an operating-crank 8 for rotating the same. Over these sprocketwheels passes an endless grate consisting of a number of grate-bars linked or pivoted together, as seen more clearly in Fig, 3. Each grate-bar, (designated bythe numeral 9,) consists of a rectangular metal bar slightly tapering from top to bottom and having its ends arranged to form arms 10, the sides of which may be beveled or curved, so that in crosssection they correspond approximately in shape with the cogs or sprockets on wheels 7.

Upon one side of each grate-bar, near the ends thereof, are formed two outwardly-projecting lugs 12, while upon the opposite side, at each end, is formed a corresponding lug 13, the construction being such that the lugs upon one side will engage with the corresponding lugs of the next adjoining bar. Each lug is provided with an aperture 14, which is aligned when the bars are in position to form an endless chain and through which passes the pivot pins or bolts l5. v

The numeral 16 designates swinging grates, which are pivoted to one or both ends of the fire-pot. This grate consists of a metallic plate with a series of downwardly-depending fingers, and is so arranged as to be swung upward by the objects on the traveling grate coming in contact therewith.

The operation will be readily understood. The endless grate-bars are passed over the cog or sprocket wheels, with the ends resting on the horizontal ledges, so that they are supported thereby directly underneath the repot. When it is desired to clear the fire-pot of ashes, cinders, doc., the shafts carrying the cog or sprocket wheels are revolved by means of the crank, and the cogs or sprockets engaging with the ends ofthe grate-bars cause a longitudinal movement to be imparted thereto, carrying the contents of the fire-pot, so that the ashes will fall through the spaces between the bars into the ash-pit below, or

IOO

with the cinders be carried over the curved upon and be supported by said-ledges, the portion of the traveling grate, the pivotcd outwardly-projectinglugs upon opposite sides grate swinging upward for this purpose. of the grate-bars, and the pivot pins or bars, I5

Having thus described my invention, what substantially as described. 5 I claim is In testimony that I claim the foregoing as In a stove, range, heater, or other furnace, my own I have hereunto affixed my signature the combination, with the casing,the fire-pot, in presence of two Witnesses. the horizontal ledges located beneath the fire- I pot, of the transverse shafts journaled in the xo casing, the cog or sprocket Wheels in said Witnesses:

shafts, the grate-bars having the curved or WM. B. RAYBOLD, beveled arms at their ends adapted to move FRANK E. GARTLEY.

ROBERT J. SHOEMAKER. 

